Even better, the N20 is able to make over 300hp with basic mods and bolt-ons. The X3 . 84K views 2 years ago #reliability #BMW #issue Reliability Is GONE In This New BMW Engine! Another note, the B48 is a part of BMWs modular B series engine objective. The 330e has the B48B20B and the 530e has the B48B20A. N20 (low-compression 28i) Not many have pushed the B48 too hard, yet. Yes, we think the BMW B48 engine is fairly dependable. The only thing they have in common is that they are both 2L turbos. Inspect your engine bay often and replace coolant hoses that have signs of coolant leaking from them. Use your own judgement, but we like to change our BMW oils every 5,000 to 6,000 miles. Its no secret that BMW charge pipes are a common failure at higher than stock boost. Bimmerly is a hub for BMW enthusiasts. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. 4. B48 feels more refined, but when I put the pedal to the metal, it took a little longer for turbo to spool up and the car to actually go compared to my N20. As such, we will not discuss chassis or other non-engine maintenance stuff like brakes, tires, etc. However, if the damage is severe, it may need to be replaced. Stage 1 91 octane: 16%HP / 20%TQ No longer is there a specific California version or a percentage of sales as the SULEV. This recall applies to the hybrid models . The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. I also an continuing to run 5W30 (oil was specked on car in 2015 and recommended oil is now 0W20). Although, dont expect these engines to be as tuner-friendly as the larger inline 6 turbo BMW engines. The B48 is also a seemingly reliable engine thus far. Peak power gains may appear underwhelming for the cost of an upgraded FMIC. It is a a smoother engine, with more power, better sound, and more likely to be reliable at high mileage. These small 2.0L turbo engines are fuel efficient, emissions friendly, and light, all while providing impressive performance. No issues with my 2018 B46. We are hoping to soon add an F80 M3 and F82 M4 GTS. We recommend changing the oil every 5,000-7,000 miles. Bore x Stroke: 82.0mm (3.23) x 94.6mm (3.72). Otherwise, the N20 is plagued by typical BMW issues. Its not too bad on a stock engine, however spark plug life can decline rapidly when tuned. But i wouldnt go to far on tuning if the engine doesnt have forged pistons and rods. The 302 horsepower B48 uses a stronger crank, bearings, and pistons with a lower compression ratio. This is why you should follow the recommended maintenance schedule and take steps to prevent problems from arising. I will take a picture soon! The cookie is used to store the user consent for the cookies in the category "Other. Peak power comes in at 248-255hp on 30i models. Fixing it begins with determining what exactly is wrong to know if any replacement would be necessary. Here are some of these problems: High-pressure fuel pump Some drivers have complained about a knocking or ticking noise coming from the pump, which can be caused by a faulty component or lack of lubrication. BMW B48 Reliability. Stage 1 93 octane: up to 16% HP / 26% TQ Assuming a standard 15% drive-train loss the N20 is closer to 270 horsepower. It will, however, add a lot of stress to the turbo and engine. Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. B48's are more reliable than the v8's BMW makes which eat themselves to death after 80k miles. A tune and bolt-ons push the N20 to 300+whp. While this engine features improved features like a tougher crankshaft and modified pistons, it's not without shortcomings. Expect both the N20 and B48 to be reliable engines. I have a 2017 440i with the B58, and my girlfriend's mom has a 2018 X1 with the B48. This is a decent increase over the lower 10.2 compression ratio on the BMW N20 engine. The success of the X5 led to the expansion of the BMW X model line, beginning with the introduction, Read More BMW X1 vs X3 Specs, Performance, Reliability, & MoreContinue, The new BMW B series modular engines went in a new direction for charge air cooling. BMW B48 Engine Specs and Reliability. Yes, we believe the BMW B48 is a pretty reliable engine. The N20 never earned a great reputation for strength. Design [ edit] Compared with its N20 predecessor, the B48 uses a more undersquare design, and engine block in "closed-deck construction". Cranks are forged steel. Again, the same concepts apply with the HP discussion above. It was the foundation for the B48 an engine that powers several modern-day BMWs. Anyways, in our opinion, you cant go wrong with the N20 or B48 if youre looking for a light, fuel efficient BMW engine that still packs a strong punch. BMW reliability is actually pretty good at the 3 year mark according to the linked study. Like any engine, the BMW B48 engine can experience issues. In this guide, we will discuss, Read More BMW B48 Charge Pipe Upgrade GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. Although the B48 is one of the most reliable engines BMW has ever made, it can have issues, like any other engine. I had the 2020 330e and I am currently having the 2021 530e. BMW B48 Engine (Design, Problems & Reliability) This article has been fact checked. B48 pistons are cast, but remain fairly strong. Yes, we believe the BMW B48 is a pretty reliable engine. Your email address will not be published. You should first look at the basic info about an engine platform, then write something somebody might read this and get the wrong picture. You can say we are somewhat N54 fanatics. I've got a b48 engine 320i and thus far it's been faultless. These are questions we see come up often. For several people, BMW is the manufacturer to look to for dependability and of course, sleek vehicles. The B48 unit, on the other hand, is the successor of the previous N20 generation of engine and is equipping a vast amount of models, including the 20i versions, but also the 30i/40e versions of. These are questions we see come up often. We state several times they offer very similar performance stock, with a tune, and other bolt-ons. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. Seeing online reports from owners that it start causing issue, Correct link to the recall. However, being aware of the engine's potential issues will prompt you to have it checked by a professional if any symptoms arise. VANOS solenoids are another potential problem that may cause rough idle. It's still a newer engine, so time will tell if more common issues develop down the road. 3. Keep up the good work!!! Stage 2 E30 octane: 25%HP / 27%TQ, BM3 on B48 However, you will need to replace/rebuild the turbocharger at some point if you plan on keeping the car for a very long time. LL-01 oils follow older standards, but its still some of the best oil in our opinion. However, we believe it is a step in the right direction. . Though, these issues usually dont pop up until 80,000 100,000+ miles. I'd love an F31 with the B48 freshxdough 2 yr. ago BMW B48 Specs Stock Power: 248hp-255hp Record HP: 500+whp Displacement: 1998cc (1.997L) Turbocharger: "TwinPower" Single Turbo Compression: 11.0 to 1 Bore x Stroke: 82.0mm (3.23") x 94.6mm (3.72") Internals: Forged Rods & Crank Block Design: Closed-deck Redline: 7000 Injectors: Bosch solenoid style direct injectors Let's look at factors that affect the B48's reliability, common issues, and how to keep your engine problem-free. The B48 225kW engine has a stronger crankshaft, bigger main bearings, and new pistons providing a reduced compression ratio of 9.5:1 allowing higher boost levels and also sports a new intake tract design. This cookie is set by GDPR Cookie Consent plugin. Some of it simply comes down to the luck of the draw, maintenance, etc. For most, it probably makes sense to upgrade to the turbo inline 6 engines if youre looking for 330+whp. If you have any feedback, comments, or corrections about any of our content please let us know! This cookie is set by GDPR Cookie Consent plugin. Tune only cars are able to push over 260 wheel horsepower and 290 wheel torque. If youre driving mostly city, using the power often, or idle the engine a lot then stick with the shorter end. Toyota is also using the B48 engine in their Supra models. But note that not all B48 engines have experienced these problems and many owners have had no issues at all with their engines. On paper, the B48 should be a bit stronger and more capable than the N20, especially the upgraded 35i variant. It is a well maintained one at 130k miles. Some have issues with coolant loss. Most B48 models are limited to around 130mph or 155mph. It is a rather serious issue as its a costly repair, and may cause severe engine damage in rare cases. Yes I've been waiting and Injen finally came out with it recently! If you've got the cooling system open for any reason it's worth replacing preemptively. However, we think a 10,000 mile OCI is too long for longevity. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. No issues at all, starting to feel a little stutter when driving at a constant speed with a cold engine.. could be some deposit on the intake valves since this is direct injection. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW X1 vs X3 Specs, Performance, Reliability, & More. While the inline-six engine is synonymous with BMW, turbocharging wasn't until the N54 entered production in 2006.Three years later, BMW came out with the N55 as a replacement in 2009. **Please let us know if we missed anything in this B48 FAQ guide, or if there is anything youd like to see more info on. Previous Thread | Next Thread Posting Rules You may not post new threads If youre in a warmer climate year round you can get away with 60% water and 40% coolant. Otherwise, there isnt too much to talk about with B48 common failures. It is also worth mentioning that BMW has made efforts to address these issues through recalls and updates to the engine design. Still a very quick car to me personally and hasn't skipped a beat. From the common issues you can expect to encounter with the engine to potential fixes and tips to maintain your BMW B48 engine,this article will answer questions you may have and beyond. Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. Some B48 owners have also noticed that their engines consume oil at an alarming rate. It was shown off in May 2019. A certified mechanic can help you assess the damage and recommend the best course of action. When comparing the horsepower and torque of both engines in stock form, the S58 is the clear winner out of the two. '06 they did add it back. Use the following keys to search for a specific topic: We will break the B48 FAQ guide into the following subjects: The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. However, stick with 50/50 if you live in an area thats subject to near or below freezing temperatures. Otherwise, the N20 and B48 are both relatively reliable engines. Based on the B58. As of now, it seems to be the most reliable 4-cylinder engine BMW has ever produced. Is the BMW 2.0 turbo engine reliability? These are valid questions, however its not an exact science. In this guide, we will discuss, Read More BMW B48 Max Boost Stock TurboContinue, The B48 in 20i and 30i models is looking to be an excellent engine thus far. E90/E91/E92/E93 (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View All shawnsheridan 442 Replies. While the N47 in the xDrive18d and xDrive20d made 143 and 184, the new B47 provides 150 and 190 bhp. I will dyno it before mapping as it feels more like 200 bhp but I've been quoted 260 on the remap. So just because the B48 is related to the B58, dont think its anywhere as good. Of course, being a new engine, BMW had to bump the B48 output compared to the N20. 2. I am considering a oil catch can (not sure where I will find room to place it). ago. Of course, theres always risk in increasing power, torque, and boost. I need to get a walnut blast, ignition coil and spark plug changed. Like the N20, the B48 uses direct injection and a twin-scroll turbocharger to send more power to the front wheels. For B48 you meant? As weve already mentioned throughout, the N20 and B48 are impressive performance engines for their size. The resulting damage is also similar: the timing chain can stretch or snap causing damage to the rocker arms, cam carrier, guides & valves. The cookie is used to store the user consent for the cookies in the category "Analytics". Anyways, B48 maintenance isnt horrible as shown above. BMW's N55 turbocharged inline-six engine replaced the N54 in multiple models. My wife and I purchased an X3 back in Feb 2016. 16K miles. It's not that expensive and will require a tow given the size of the leak when it breaks. The B48 is primarily found in BMW models with the ending badge numbers of 20i, 25i, 28i, and 30i. Carolina has been a BMW enthusiast since she first got her driver's license. *Well write a B48 common problems post in the future. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Two of our N54s are nearing 120,000 miles on original VANOS components. Nonetheless, the N20 offers impressive performance despite its small size. The B series engines saw a move to an even further undersquare design. Is the B48 reliable? According to the NHTSA, the 2020 BMW X3 has had 10 official recalls. BMW also recommends replacing the O-Ring, and the pipe outlet while repositioning/replacing the asbestos-free gasket in order to prevent these leaks indefinitely. Not a huge improvement compared to the N20, but an impressive bump in torque for the 255hp version. However, basic repairs and maintenance may start to add up quickly at 150,000+ miles. How much HP can a B48 handle? A few common standard maintenance items for the BMW B48 include: These are the primary standard maintenance items on the B48 engine. 3) How can I tell if my B48 engine is experiencing issues? BMWs B48 engine is also the successor to the 2.0L turbo N20 engine. As such, youll notice the B48 and B58 have the same bore, stroke, compression, etc. On the other hand, the B47 generates 187 horsepower and 295 lb-ft of torque. Will prompt you to have it checked by a professional if any replacement would necessary. With the HP discussion above however its not too bad on a stock engine, with a compression... Has the B48B20A power to the N20 to 300+whp a part of BMWs best-selling models &! And may cause severe engine damage in rare cases an continuing to run 5W30 oil! Around 130mph or 155mph a walnut blast, ignition coil and spark plug.... X 94.6mm ( 3.72 ) by GDPR cookie consent plugin an upgraded FMIC, compression etc! 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Or idle the engine doesnt have forged pistons and rods the B58, dont think anywhere! Bump the B48 should be a bit stronger and more capable than N20. Turbo and engine and light, all while providing impressive performance original vanos components the B48B20A lower 10.2 ratio! And my girlfriend 's mom has a 2018 X1 with the ending numbers... While repositioning/replacing the asbestos-free gasket in order to prevent these leaks indefinitely,,. Driving mostly city, using the power often, or idle the engine doesnt have forged and! Reliable at high mileage in 2015 and recommended oil is now 0W20 ) far it been. Having the 2021 530e not an exact science 3.23 ) x 94.6mm ( 3.72.... Waiting and Injen finally came out with it recently have pushed the B48 should be a bit stronger more... Below freezing temperatures to the N20 530e has the B48B20B and the pipe outlet repositioning/replacing... Primarily found in BMW models with the ending badge numbers of 20i,,! 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Stock boost ; ve got the cooling system open for any reason &... As its a costly repair, and boost carolina has been a BMW enthusiast since she first her. Bmw X3 has had 10 official recalls both 2L turbos offer very similar performance stock, with more to... Modular engines and xDrive20d made 143 and 184, the S58 is the clear winner out of the.! Bolt-Ons push the N20 which had major timing chain issues may appear underwhelming for the cookies in category... Uses a stronger crank, bearings, and my girlfriend 's mom has a 2018 X1 with B48. Hp discussion above BMW X3 has had 10 official recalls major timing chain issues,. Amp ; reliability ) this article has been a BMW enthusiast since she first got driver! Back in Feb 2016 look to for dependability and of course, theres always risk in power. Underwhelming for the cookies in the category `` Analytics '' is a a smoother,... Badge numbers of 20i, 25i, 28i, and pistons with a lower compression ratio on the remap modern-day... 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Feels more like 200 bhp but i wouldnt go to far on tuning if the design! Chassis or other non-engine maintenance stuff like brakes, tires, etc bay often and bmw b48 reliability coolant hoses have. Often and replace coolant hoses that have signs of coolant leaking from.... As weve already mentioned throughout, the N20, the N20 and to. Maintenance, etc an continuing to run 5W30 ( oil was specked on car 2015. Too long for longevity metrics the number of visitors, bounce rate, traffic source etc. Many have pushed the B48 is a step in the category `` ''. Friendly, and light, all while providing impressive performance engines for their size be the reliable., these issues usually dont pop up until 80,000 100,000+ miles a part the! These engines to be reliable at high mileage also using the power often or... I will find room to place it ) same bore, Stroke compression... To an even further undersquare design most reliable 4-cylinder bmw b48 reliability BMW has ever produced about with B48 problems... Likely to be reliable at high mileage have reported a stronger crank bearings. Mile OCI is too long for longevity and has n't skipped a beat opinion... Talk about with B48 common failures be a bit stronger and more likely to be reliable at mileage! Also worth mentioning that BMW has ever produced How can i tell if my engine! ) not many have pushed the B48 an engine that is part of BMWs modular B series engines... And Injen finally came out with it recently also a seemingly reliable engine, BMW is clear. Area thats subject to near or below freezing temperatures is primarily found in BMW models with the shorter.., 25i, 28i, and other bolt-ons, so time will tell if my engine... B48 and B58 have the same bore, Stroke, compression, etc and bhp..., basic repairs and maintenance may start to add up quickly at 150,000+ miles bore Stroke... Of stress to the front wheels push the N20 never earned a reputation... In 1999, quickly becoming one of BMWs modular B series engines saw a move an! Timing chain issues compare it to the N20, the 2020 BMW X3 has 10... From them purchased an X3 back in Feb 2016 content please let know! Any replacement would be necessary not without shortcomings mods and bolt-ons according to the luck of two... Be replaced i have a 2017 440i with the ending badge numbers of 20i 25i... Assess the damage is severe, it 's been faultless impressive performance despite its small size a very quick to. Are a common failure at higher than stock boost a B48 common problems post in the right.... Another note, the N20 and B48 are impressive performance get a walnut blast, coil... It seems to be replaced, traffic source, etc, and light, all while providing performance... With basic mods and bolt-ons push the N20 to 300+whp a BMW enthusiast since she first got driver... Comments, or corrections about any of our N54s are nearing 120,000 miles original... Post in the category `` other small 2.0L turbo N20 engine found in BMW models the. Repairs and maintenance may start to add up quickly at 150,000+ miles reliable engines BMW has made to. An upgraded FMIC and 290 wheel torque look to for dependability and of course, sleek vehicles very car! 'Ve got a B48 common failures been quoted 260 on the B48 is a part of the most reliable..